The Argentine was furious that right-back Sime Vrsaljko had been shown a red card just ten minutes into the first leg fixture for two reckless tackles.

Vrsaljko was booked very early into the clash after upending Jack Wilshere. Moments later he was shown a second yellow for catching Alexandre Lacazette on the ankle with a crunching tackle.

Referee Clement Turpin made the correct call twice, despite the decision coming very early into the game, and the match official being swarmed by Ateltico players.

Diego Simeone was sent to the stands for shouting at the match official (Image: BT Sport)

The Argentine was furious that Sime Vrsaljko had been shown a red card (Image: Getty Images Europe)

But Simeone didn't see things this way, and was absolutely livid on the touchline as Vrsaljko was forced to walk past him and make his way down the tunnel.

The match restarted with the Spanish side down to ten men, and very much on the back foot.

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Simeone watches the match from up near the Arsenal director's box (Image: Offside)

Vrsaljko was shown a red card just 10 minutes in the semi-final (Image: AFP)

However, their boss was unable to put the issue behind him, and continued to rant and rave on the touchline, catching Turpin's attention.

The referee then opted to send Simeone to the stands, much to his frustration, and it seems more than a few eagle-eyed Gunners supporters believe the Atletico boss shouted "hijo de puta" - which translates as "motherf*****" - before being given his marching orders.

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